Growth of Trichoderma viride on bean (Phaseolus) pod solid basal medium

Trichoderma viride Pers. isolated from soil was grown on two different solid media (Potato Dex trose Agar, PDA, and Bean ( Phaseolus Phaseolus ) Pod Agar, BPA) impregnated sep a rate ly with three nitrogen sources at room temperature (29±2 C). Growth rate was determined from the radial growth of the fungus on Petri dishes. There was no sig nifi cant difference between radial growth of T. viride on PDA and BPA sup ple ment ed with magnesium sulphate and so di um nitrate (p<0.05%). The fun gus did not grow on BPA supplemented with sodium nitrite, where as growth of the organism was observed on PDA treated likewise. Growth of the fungus on ammoniumtreated BPA was com pa ra ble to the control, while no growth was noticed on PDA. On the whole, the growth of T. viride on BPA compared well with that on PDA (p< 0.05%). This is an indication of the possible use of bean pod as a carrier medium for T. viride in biocontrol programmes.